To run this program unzip / copy all files from pi_demo in support directory of AutoCAD. At command prompt run menuload command (Type menuload and press enter).
A dialog box will open showing acad as current menu in menugroup tab. Click on browse near file name text box. Change folder to acad\support and click on arrow of Files of Type box. Select Menu Template (*.mnu) and select pi as menu to be loaded. Click on load button. Click on Menu Bar tab and select pi in menu group box. (If pi file is not found, click on arrow in File Type box and select mnu as file type. Click on OK to compile the menu). Click on Windows in menu bar box. Insert pi menu in left box, to the menu bar box. Click on close. pi menu will be loaded, and start using pull down menu. The pull-down menus, have all the p&i drawing options. The other menu items are not modified.

Pull Down Menu to Create Lines : The lines are arranged on different layers, and the layer name is same as line number. The line number is generally in format : Size-Service-Line Number-Spec. The existing lines are shown in the list box.

1. New Line NumberYou can add new lines to the box by typing in New Line Number and select add. New layer is created, and it is displayed in list box.
2. Edit Line Number : To edit an existing line number select a line number from list box, enter a new line number and select edit line number. The old number in list box is replaced by new number.
3. Delete Line Number : To delete an existing line number select a line number from list box, and it is deleted.
4. Draw Line : You can draw lines on a particular layer using this option. For this you have to either select a line number from list box, or type in a new line number.

Pull Down Menu to insert Flow Instruments : You can insert Flow Instruments in the lines. Select a Flow Instrument to be inserted. You are then asked to select where it is to be inserted.

Pull Down Menu to insert valves : You can access this Valve in Pulldown Menu.



Select Valve through Menu : You can select it directly from the menu. First valves are commonly used valves and next are Control Valves. Piston Operated, Jacketed and Motorized valves can be accessed through cascading menu. To insert a valve in a line, select a valve to be inserted. You are then asked to select a line at left insertion point on that line. The line is cut and valve is inserted in the line. Valve is put on the layer of the line.

Pull Down Menu to insert Strainers : You can insert strainers in the drawing. Select a strainer to be inserted. You are then asked to select a line at left insertion point where it is to be inserted. Strainer is put on the layer of the line.

Pull Down Menu to insert Equipments : You can insert Equipments in the drawing.

Pull Down Menu to insert Reactors : Select a Reactor to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Pumps / Blowers : Select a pump or blower to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Compressors : Select a compressor to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Feeders : Select a filter to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Heat Exchangers : Select a heat exchanger to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Towers : Select a Columns / tower to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Tanks : Select a tank to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Drives : Select a drive to be inserted. You are then asked to select a point where it is to be inserted.

Pull Down Menu to insert Miscelleneous Equipments : Select an Equipments to be inserted. You are then asked to select a point where it is to be inserted.